add rule to disallow octal literals and escapes

[ajafff]

ES5 deprecated octal literals (010) and octal escape sequences ('\41'). https://mathiasbynens.be/notes/javascript-escapes#octal

TypeScript currently only forbids octal literals in strict mode. But it allows octal escapes in string literals even in strict mode. And it allows octal escapes in template strings (always forbidden).
That is tracked by microsoft/TypeScript#396

The new rule should forbid all octal literals and escape sequences regardless of strict mode.
The autofixer should convert them to unicode escapes.

This rule is similar to #203

[ajafff]

Note that this rule should only forbid the legacy octal literal syntax 010 while allowing and even fixing to the newer octal syntax 0o10 introduced in ES2015.

[ajafff]

octal literals are actually handled quite good in the compiler. so this is only about octal escape sequences. additionally they should be fixed to hex escape sequences to avoid useless bloat in the code.